John Snow writes:
> QAPISchemaInfo instances are sometimes defined as an Optional
> field/argument because built-in definitions don't *have* a source
> definition. As a consequence, there are a few places where we need to
> assert that it's present because the root entity definition can only
> en
QAPISchemaInfo instances are sometimes defined as an Optional
field/argument because built-in definitions don't *have* a source
definition. As a consequence, there are a few places where we need to
assert that it's present because the root entity definition can only
enforce that it is "Optional".
